Sodium tungstate hmoov, tsuas yog siv ntawm cov tshuaj sib xyaw, cas {13472-45-2}}} Sodium tungstate yog yooj yim soluble hauv dej, thiab aqueous makaline, insoluble hauv ethanol, thiab me ntsis soluble hauv ammonia dej. Huab cua huab cua. Thaum rhuab rau 100 degree, nws poob nws cov dej khov kho thiab ua rau muaj mob anhydrous. Reacts nrog cov muaj zog acids muaj zog (tsis suav hydrofluoric acid) los tsim cov organic acid, reaclo acid, oxalic acid los ua cov olicic acid complexes. Siv los ua mordant, kev tshuaj xyuas tshuaj tiv thaiv, hluav taws xob kho, hluav taws kub thiab dej tshuaj, phospoolungstate, borotungstate, thiab lwm yam.
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Tshuaj Cov Qauv |
Na2O4W |
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Muaj pes tsawg leej |
294 |
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Molecular hnyav |
294 |
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m/z |
294 (100.0%), 296 (92.8%), 292 (86.5%), 293 (46.7%) |
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Kev Ntsuam Xyuas |
Na, 15.65; O, 21.78; W, 62.57 |
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Raws li ib qho tshuaj lom neeg ib txwm muaj, sodium tungstate tuaj yeem ua ke raws li cov hauv qab no:
1. Wolframite yog crushed rau 320 mesh los ntawm alkali hydrolysis ntawm Wolframsy, thiab tom qab ntawd ntxiv rau lub reactor nrog 30% caustic dej qab zib rau alkali hydrolysis. Tom qab alkali hydrolysis, nws reacts nrog calcium chloride rau synthesize calcium tungium tungstate. Calcium tungstate reacts nrog hydrochloric acid los tsim cov kua qaub tungstic acid, thiab tom qab ntawd reacts nrog caustic dej qab zib los ua cov sodium tungstate. Tom qab evaporation crystallization, centrifugal lub cev qhuav dej, thiab ziab, cov khoom tiav ntawm cov sodium tungstate tau txais.
2. Hauv kev lag luam, RAW ntxhia Wolframite yog rho tawm nrog cov khoom noj aque tungstate, ces nakwo4 · 2H2O nrog sodium iydroxide dua. Txoj kev ua kom zoo nkauj tuaj yeem yog cov roj. Yog tias xav tau cov khoom ntshiab ntxiv, ntxiv cov tshuaj muaj aqueous rau cov kua afocloric acid mus rau nag los nag li cas. Ntxuav cov prepipition ntau dua, thiab tom qab ntawd yaj nws hauv sodium hydrocide aque kua los rau precipaly thiab crystallize nws. DecahyDrate tuaj yeem tau txais hauv qab 6 degree, thaum qub ua ntej tuaj yeem tau txais siab dua 6 degree.
Sodium tungstate hmoovyog qhov sib txuas uas muaj tungsten thiab muaj ntau yam siv. Hauv qab no yog cov ncauj lus kom ntxaws ntawm sodium tungstate hauv cov neeg ua hauj lwm, cov tshuaj tua hluav taws, cov tshuaj pleev hluav taws, hluav taws kub thiab boron tungstate:
1. Mordant: Sodium tungstate yog siv nyob rau hauv dyeing cov txheej txheem ua mordant. Nws yog cov mordant zoo uas tuaj yeem tsim cov nyom nrog qee cov hlau ions, muab cov ntawv nyeem lossis lwm yam khoom siv ntev-ntev. Daim ntawv thov no yog tshwj xeeb siv nyob rau hauv kev lag luam textile. Siv sodium tungstate raws li mordant tuaj yeem txhim kho qhov ua kom tawg tau zoo, txhim kho qhov ci thiab ruaj khov ntawm cov xim.
2. Kev tshuaj ntsuam reagent: sodium tungstate tuaj yeem siv los ua kev tshawb nrhiav cov hlau, tooj liab, ua rau nws yooj yim rau kev ntsuas ntau rau kev ntsuas. Daim ntawv thov no muaj tus nqi tseem ceeb hauv kev tshuaj ntsuam xyuas tshuaj. Siv sodium tungstate raws li kev tshawb nrhiav reagent tuaj yeem ua rau cov txheej txheem tshuaj xyuas, txhim kho qhov raug thiab rhiab ntawm kev tsom xam.
3. Catalyst: sodium tungstate tuaj yeem siv ua catalyst nyob rau qee cov tshuaj lom neeg. Nws tuaj yeem txhawb cov oxidation cov tshuaj tiv thaiv ntawm cov organic teeb meem, yog li tsim cov organic tsim nyog. Daim ntawv thov no yog qhov tseem ceeb hauv kev tsim cov tshuaj lom neeg. Siv sodium tungstate raws li kev catalyst tuaj yeem txhim kho cov tshuaj tiv thaiv, nce cov khoom lag luam khoom thiab tawm los.
5. Cov khoom tiv thaiv hluav taws kub thiab dej tiv thaiv: sodium tungstate tuaj yeem siv los tsim cov chaw tua hluav taws thiab dej. Cov ntaub ntawv no muaj hluav taws kub zoo heev thiab dej tsis kam tua thiab tsis siv dav, thiab tau siv dav hauv teb xws li kev tsim kho thiab chaw ua haujlwm hauv tsev. Siv sodium tungstate yog cov khoom siv raw tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom siv, txhim kho nws cov nyhuv tiv thaiv thiab cov nyhuv dej.
4. Tus neeg saib xyuas dej: sodium tungstate tuaj yeem siv ua tus neeg saib xyuas dej kom huv si. Nws tuaj yeem tsim cov nyom nrog qee yam kev phom sij hauv dej, yog li tshem cov tshuaj ions thiab txhim kho cov dej zoo. Daim ntawv thov no tau siv dav hauv kev kho cov dej. Siv sodium tungstate raws li tus neeg saib xyuas dej tua tau xws li cov phom phom thiab cov organic paug los ntawm dej, tiv thaiv cov dej ecological ib puag ncig.
6. Phosphotungstate: sodium tungstate thiab phosphorus tebchaw thiab phosphorus cov lus qhia ua ke, uas yog cov khoom siv nrog cov khoom lag luam zoo xws li cov khoom siv catalysts thiab optoelectronic cov ntaub ntawv. Sodium tungstate tuaj yeem siv los ua cov khoom siv raw rau synthesize synthesize salts nrog cov qauv sib txawv, ua tiav kev tswj hwm cov qauv.
7. Boron tungstate:Sodium tungstate hmoovYuav siv tau los siv cov khoom siv boron tungstate, uas yog ib qho khoom siv nrog lub siab tawv, thiab yog siv dav hauv teb xws li khoom siv hluav taws xob xws li cov khoom siv hluav taws xob thiab tshuab. Sodium tungstate tuaj yeem siv los ua cov khoom siv raw rau synthesize boron tungstate nrog cov qauv sib txawv, ua tiav kev tswj hwm cov kev ua tau zoo.
8. Sodium tungstate, raws li ib co kuab tshuaj, tuaj yeem tau qhia txog enamel pigments kom txo tau cov pa hluav taws kub thiab sib txuas tag nrho:
8.1 Kev Lag Luam Eamel: Hauv Kev Lag Luam Kev Lag Luam Kev Lag Luam, Sodium Tungstate feem ntau yog siv los ua cov kuab tshuaj co thiab sib xyaw nrog cov pigel pigments. Los ntawm kev ntxiv cov sodium tungstate, lub cev hluav taws kub ntawm txha hniav laus tuaj yeem txo, lub sijhawm hluav taws xob tuaj yeem kho tau luv. Ib qho ntxiv, sodium tungstate kuj tseem tuaj yeem txhim kho lub smoothness, hardness, thiab corrosion tsis kam ntawm txha hniav laus.
8.2 Kev lag luam ceramic: hauv kev lag luam ceramic, sodium tungstate kuj tau siv los ua cov kuab tshuaj los co hauv glazes thiab tej paj ceramic. Los ntawm kev qhia sodium tungstate, lub hluav taws kub tau qis dua, kev siv zog tuaj yeem txo qis, thiab cov tshuaj Hmoob tuaj yeem hloov kho.
8.3 Kev tsim tawm iav: sodium tungstate tuaj yeem ua ib qho ntawm co cov duab tsim tawm los tsim cov khoom siv iav iav los tsim cov khoom iav nrog cov xim tshwj xeeb thiab cov khoom. Sodium tungstate kuj tseem siv tau los tsim cov iav tshwj xeeb, xws li iav tshwj xeeb, lub zog siab, thiab lwm yam.
8.4 Kev Kho Hlau Hlau: Hauv kev kho cov hlau saum npoo av tuaj yeem ua cov yeeb yaj kiab tuab, txhim kho cov corrosion tsis kam thiab hnav tsis kam ntawm cov hlau. Ib qho ntxiv, sodium tungstate kuj tseem siv tau los tsim tshwj xeeb hlau hlau.
8.5 Cov xim harmingary: sodium tungstate kuj tseem siv tau rau cov xim ua kom zoo, tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem tsim khoom ntawm txha hniav laus thiab tej hub. Vim nws cov solubility zoo thiab kev ruaj khov, sodium tungstate tuaj yeem sib xyaw nrog lwm cov xim los kho cov xim ntawm cov khoom lag luam thiab ua tiav cov txiaj ntsig xim zoo.
Cov Khoom Txiav Txim Siab Cov Ntsiab Lus
Kev txiav txim siab ntawm Tungsten Trioxide (Wo3) cov ntsiab lus hauv sodium tungstate (Xinkoning Gravimetric Txoj Kev)
Nyob rau hauv ib qho kev daws teeb meem kub nrog tus nqi ntawm 3. {{}}. 4, tungstic acid yog nag thiab sib cais los ntawm impurities. Tom qab reccination, nws tiav niam txiv tungsten trioxide, uas yog hnyav thiab piv los ntawm xim.
Methyl Violet qhia tau hais tias {0 hydrochloric acid), 1%}}}}}}}}}}}}}}}}}}}}}}}
Hnyav {{{0}}}}}}}} Methylen nws nyob rau hauv ib qho me me ntawm {12}} Methylen nws me me), thiab neutralize nws nrog hydrochloric acid ({1+1) kom txog thaum nws hloov liab. Thaum nplawm tsis tu ncua, ntxiv 10ml ntawm 10% xinthing thiab txuas ntxiv nplawm kom ua rau cov preagate coagatate. Yog tias txheej txheej sab saud yog qhov tseeb, cia nws sawv ntsug. Tom qab cov dej nag, lim nws nrog cov ntawv lim lim ceev ceev. Qhov filtrate tau txais nyob rau hauv 250mL Volumetric flask, thiab cov nag daus tau ntxuav nrog 0.2% Xinthening kev ntxuav cov tshuaj tsawg kawg tsib zaug. Tom qab ntxuav, cov nag daus yog pauv mus rau ib plooj cruced ua ke nrog cov ntawv lim, thiab tom qab ntawd carbonized rauv taws ua ke, thiab tom qab ntawd} feeb, txias, thiab hnyav. Kab lus yog:. Qhov filtrate tau raug tannin thiab methyl vietlet colorimetric.
WO3 (%) {{= (w / g) 100+ c. Hauv cov qauv: W - Qhov hnyav ntawm tungsten trioxide (grams), g - qhov hnyav ntawm cov qauv hnyav (grams), C - WO3 cov ntsiab lus ntsuas hauv cov khoom siv.
① Qhov tshwj xeeb yuav tsum tau ntxuav nrog Sodium ions, Txwv tsis pub cov khoom siv hlawv yuav tig xim dub thiab qhov tshwm sim yuav siab dua.
Qhov ntsuas tau yog 0. 1%}. 1%}. 1%}. 1%}.
Cov qauv yog raws li hauv qab no: ncuav cov filtrate los ntawm lub volumetric flask rov qab rau hauv lub beaker tau ntau dua 12, tom qab ntawd lim rau lub cim, soft rau lub cim, lim rau lub cim, lim qhuav, thiab ua raws li covsodium tungstate hmoovtxoj kev spectrophotometric.
Cim npe nrov: Sodium Tungstate Hmoov Cas Cas 13472-45-2, cov chaw muag khoom, chaw tsim khoom, chaw tsim khoom, yuav khoom, khoom, rau muag